Yolanda, Tiara Ansellya Resty (2018) Studi Optimisasi Heat Flux dan Welding Speed pada Pengelasan Laser Fiber terhadap Lebar Lasan, Kedalaman Penetrasi dan Tegangan Sisa Esshete 1250 dengan Metode Elemen Hingga. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Parameter input pengelasan laser berpengaruh terhadap kualitas hasil pengelasan. Hasil pengelasan berupa lebar lasan, kedalaman penetrasi dan tegangan sisa menentukan kualitas dari sambungan logam. Penelitian ini dilakukan untuk mendapatkan hasil pengelasan laser optimal digunakan Finite Element Method (FEM) dan Response Surface Methodology (RSM). Proses simulasi pada material Esshete 1250 dilakukan sebanyak 12 kali dengan parameter input yang berbeda. Parameter input yang pertama adalah heat flux dengan variasi power input 2000 W, 2250 W, 2500 W, dan 2750 W. Parameter input yang kedua adalah welding speed dengan variasi 2,5 m/min, 3 m/min, dan 3,5 m/min. Hasil simulasi menggambarkan pengaruh heat flux yang semakin tinggi akan meningkatkan lebar lasan, memperdalam kedalaman penetrasi dan meningkatkan tegangan sisa. Hasil simulasi juga menggambarkan pengaruh welding speed yang semakin tinggi akan mempersempit lebar lasan, mengurangi kedalaman penetrasi, dan mengurangi tegangan sisa. Hasil dari simulasi divalidasi menggunakan persamaan matematis dan didapatkan hasil yang valid. ======================================================================================================
Laser welding input parameters have significant effect on the welding bead profile. Welding bead profile like width weld, penetration depth, and residual stress determine the quality of butt joint. This study was done to get optimal laser welding bead profile parameters using Finite Element Method (FEM) and Response Surface Methodoly (RSM). Simulation process on Esshete 1250 materials were done 12 times with different input parameters. The first input parameters were power input 2000 W, 2250 W, 2500 W, and 2750 W. The second parameters were welding speed of 2,5 m/min, 3 m/min, and 3,5 m/min. From the result simulation were known that the higher heat flux will increase weld width, deepen penetration depth, and increase residual stress. Another case, the higher welding speed will make narrow weld width, reduce penetration depth, and reduce residual stress. Simulation result was validated with mathematical equation and obtained valid result.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 671.52 Yol s-1 3100018074264 |
| Uncontrolled Keywords: | Esshete 1250; FEM; Laser; Pengelasan; RSM; Esshete 1250; Welding |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TS Manufactures T Technology > TS Manufactures > TS227 Welding. |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Yolanda Tiara Ansellya Resty |
| Date Deposited: | 19 Feb 2018 03:21 |
| Last Modified: | 20 Apr 2020 22:04 |
| URI: | http://repository.its.ac.id/id/eprint/49231 |
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